QString manipulation - QRegExp

Hi there,
I have a QString like this:

"message1\nmessage2\nmessage3\nEnd"
or
"message1\nmessage2\n\nmessage3\n\nEnd"

and i want to obtain this QString:

"message1\nmessage2\nmessage3"
or
"message1\nmessage2\n\nmessage3"

can i do it with a QRegExp or is there a best way?
thx

See QString::ensWidth() and QString::chop().